Mathematics · Mensuration
If 'A * B' means A multiplied by B, 'A @ B' means A minus B, 'A $ B' means A plus B, and 'A # B' means A divided by B, what will be the expression for the total area of 21 circles, each having a radius of 'r' cm?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 166 * r * r✓
- 266 * r2 # 7
- 322 # 21 * r * r
- 422 * r * 7 * r # 21
Correct answer
66 * r * r
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